In England, an eccentric police inspector, an earnest test pilot and a spunky female reporter team up to solve the mystery of a series of test aircraft which have disappeared without a trace while over the ocean on their maiden flights; unaware, as they are, that a spy ring has been shooting the planes down with a ray machine hidden aboard a salvage vessel which is on hand to haul the downed aircraft aboard, crews and all.

Binkie Stuart, a child star whose career briefly flourished before the outbreak of war in 1939, takes the titular role in this heart-warming musical charting the adventures of a little orphan girl in the difficult days of pre-war Ireland. Starring alongside Hollywood siren Maureen O Hara in an early role, Britain's answer to Shirley Temple plays a spirited young girl left in the clutches of a cruel guardian aunt.

British agent working in Russia is forced to remain longer than planned once the revolution begins. After being released from prison in Siberia he poses as a Russian Commissar. Because of his position among the revolutionaries, he is able to rescue a Russian countess from the Bolsheviks.